Load-limiting seatbelt retractor
AssigneeFord Global Technologies, LLC
InventorsMohammad Omar Faruque, Dean M. Jaradi, S. M. Iskander Farooq
Life of this patent
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Abstract
A restraint system includes a retractor housing; a spool rotatably coupled to the retractor housing and defining an axis of rotation; an inner torsion bar elongated along the axis of rotation and positioned coaxially in the spool; an outer torsion bar elongated along the axis of rotation, extending coaxially around the inner torsion bar, and positioned coaxially in the spool; an engagement member selectively engageable with the outer torsion bar; and a solenoid operable to move the engagement member into engagement with the outer torsion bar and out of engagement with the outer torsion bar.
Claims19
A restraint system comprising:
- a retractor housing;
- a spool rotatably coupled to the retractor housing and defining an axis of rotation;
- an inner torsion bar elongated along the axis of rotation and positioned coaxially in the spool;
- a first outer torsion bar elongated along the axis of rotation, extending coaxially around the inner torsion bar, and positioned coaxially in the spool;
- an engagement member selectively engageable with the first outer torsion bar;
- a second outer torsion bar elongated along the axis of rotation, extending coaxially around the inner torsion bar, and positioned coaxially in the spool;
- and
- a solenoid operable to move the engagement member into engagement with the first outer torsion bar and out of engagement with the first outer torsion bar.
A restraint system comprising:
- a retractor housing;
- a spool rotatably coupled to the retractor housing and defining an axis of rotation;
- an inner torsion bar elongated along the axis of rotation and positioned coaxially in the spool;
- an outer torsion bar elongated along the axis of rotation, extending coaxially around the inner torsion bar, and positioned coaxially in the spool;
- an engagement member selectively engageable with the outer torsion bar;
- and
- a solenoid operable to move the engagement member into engagement with the outer torsion bar and out of engagement with the outer torsion bar;
- wherein the solenoid is directly fixed to the spool.
Dependencies are inferred from the claim text.